Sonia Kelly, M.Ed., Lead Teacher, holds a Master's Degree in Education from Loyola College in Maryland and an Association Montessori Internationale (AMI) Diploma from the Washington Montessori Institute.  Ms. Kelly is Department of Education Certified to teach all grades from preschool through third grade and spent the first half of her career teaching each of those grades in the public school setting.  She has also taught art classes for children at the Duxbury Art Association.  She is certified in Child Nutrition and applies this knowledge to ensure that Blue River students enjoy healthy and nutritious snacks and lunches.  Ms. Kelly is a daily practitioner of yoga and has been formally trained to teach Yoga to children from birth to 12 years of age under internationally renowned Yoga therapist and author Sonia Sumar; she loves to share her yoga practice with the students of Blue River everyday!  Ms. Kelly lives in Duxbury with her husband, Geoff, and their sons, Jack and Will.  She loves to travel both locally and internationally, cook for her family and students, snowboard, and garden in her organic vegetable garden. 
Odile Bartley, Assistant Teacher, brings to us her early childhood teaching experience and her love of the natural world.  She has been trained in guiding students through outdoor explorations, scientific inquiry, art projects, music and movement, conservation activities, and reading and math connections.  She leads children on nature walks and utilizes her trainings to build on our children's sense of wonder of nature and the wildlife around them.  Ms. Bartley also specializes in teaching social skills and conflict resolution to our students.  She lives in Scituate with her husband, Rick, and two children, Will and Alli, and she enjoys traveling and camping with her family.
Robin Elliott, Assistant Teacher, has been part of the Blue River family since her oldest child enrolled in 2006. Since then, all four of her children have attended our school. She is a firm believer in the Montessori/Reggio approach to learning, and has witnessed the benefits of this foundation as each of her children has progressed through the Duxbury school system.  Robin joined our faculty in 2016 after realizing that she has a passion for teaching the fundamentals of math, science, and reading to preschool aged children since they are naturally curious and eager to learn to accomplish tasks on their own. Robin enjoys helping the students achieve their independence and enjoys seeing the excitement on their faces when they do.  Robin lives in Duxbury with her husband, four boys, and a Cavalier King Charles. She graduated from Deerfield Academy, and holds a B.A. from Williams College.

Kirsten Mullen, Assistant Teacher, began her career working in Early Childhood Education in 1987.  She worked as a nanny and started as an assistant toddler teacher in corporate childcare eventually earning her Director II certification.  She was a Mentor Teacher for John Hancock Child Care Center in Boston where the Reggio Emilia approach was practiced and a part of the center's philosophy.  Kirsten enjoys reading, exploring nature, science, art and teaching children to be independent thinkers.  She spends as much time as she can in the mountains camping, boating, and hiking.  She finds peace in nature and working in her yard.  Kirsten lives in Abington with Bill, her husband of 20 years, her 16 year old black belt, mechanic son Will, 12 year old dancer, Emma, 11 year old gymnast, Lily, dog, Pepper, and cat, Cow.  Her eldest Hannah is a freshman at Lasell University.

Julie Materna, Assistant Teacher, went to UMass Amherst where she majored in Elementary Education.  After graduating, she taught preschool in Boston for 5 years before becoming a stay-at-home mom.  She now resides in Duxbury, which is where she grew up, with her husband Andy and 3 kids, Hadley (13), Ansley (8) and Reed (6).  She enjoys photography, traveling, reading, and summertime in Duxbury! 
Lisa Driscoll, Spanish Teacher, combines her knowledge of the Spanish language with her love of teaching and art to form an arts-based language program.  Focusing on fun first, Senorita Lisa has been engaging the students at Blue River for ten years!  With her puppets, interactive dolls, songs, instruments, dances, games, and special projects, she teaches children the fundamentals of Spanish.